Radiator for motor-vehicles



H. JAFFE.

RADIATOR FOR MOTOR VEHICLES.

APPLICATION FILED NOV. 29, 1919.

PatentedSept. 13,1921.

WITNESS: IN VEN TOR.

.MSVRRY :LFFFE,

ATTORNEYS.

orric HARRY J'AFFE, OF CHICAGO, ILLINOIS, ASSIGNOR TO JAIFE RADIATOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

' RADIATOR FOR MOTOR-VEHICLES.

Specification of Letters Patent.

Patented Sept. 13, 1921.

Application filed November 29, 1919. Serial No. 341,488.

To all whom it may concern:

Be it known that I, HARRYJAFFE, a citizen of the United States, and resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Radiators for Motor-Vehicles; and I do hereby declare that the following description of my invenfigu tion, taken in connection with the accompointed out in the claims.

The object of this invention is the production of an efficient and serviceable radiator for internal combustion engines, for keeping the temperature of the cylinders of this type of engines at a proper working temperature. The preferred construction of this type of radiators includes a multiplicity of vertically disposed water tubes connecting the upper and lower water reservoirs of the radiator, and interposed between these water tubes fins, filler strips, or spacers. sofcalled,

the object of which is to abstract heat from the water passing downwardly through the tubes by contacting with the metallic walls and thereby conduct the cooling effect of the filler strips to the walls of the tubes.

In the drawings forming a part of this specification, and illustrating the preferred embodiment of my invention- Figure 1 is a front elevation of a portion of a radiator core constructed in accord with my invention. Fig. 2 is an elevation of a formed strip or ribbon of sheet metal constituting one member of a water tube employed in said core. Fig. 3 is a front elevation of a fragment of the core shown in Fig. 1, but drawn on a largely magnified scale. Fig. 4 is a sectional view on line 4.-4 of Fig. 3. Fig. 5 is an elevation of a portion of the filler strip used in the air spaces of this radiator core. Fig. 6 is an edge view of the same. Fig. 7 is a plan view of the blank from which this filler strip is attained; and

Fig. 8 is an edge view of the same. Fig. 9 1s an edge vlew of-thls filler strip greatly magnlfied. Flg. 1O is'a sectional elevation of one of the water tubes, drawn on line 10-10,

of Fig. 2.

Like partsare indicated by the same characters and symbols of reference in all the res.

A, A, in these drawings designate the water tubes employed in the radiator core. These water tubes are formed of two strips of sheet metal, such as copper or brass, each strip or ribbon having its longitudinal margins crimped to afford projections 12, which form, as it were, a continuous series of bends and rebends, each of which forms .two sides of a hexagon. These projections 12 are connected transversely of the ribbon by a simi-' lar series of projections 13, which latter projections are, however, of less depth than the marginal projections 12; and they merge into these marginal projections by pronouncedly sloping portions 14. Each of these blanks has its terminals left flatfor some distance, as indicated at 15, Fig. 2, and others, which flat portions are bent at right angles to afford a connection between the walls of adjacent water tubes, as illustrated in Figs. 1, 3, and 10.

Two of these plates A, A, are placed face to face with their marginal edges in contact, thereby forming between these plates a narrow water passage 16, of a depth equal to the depth of the projections 13, as clearly shown in Fig. 4, said water passage being of somewhat zigzag form.

The water tubes are arranged -in,a vertical, parallel spaced relationship, whereby there are formed between each air of adjacent water tubes, an air space and into these air spaces are placed filler strips C, of peculiar formation. strips is produced from a sheet metallic rib bon having a width corresponding .to the -width of the water tube sheet, said strip, as shown in Figs. 5 to 9 inclusive, having its longitudinal margins provided with spacedapart notches 17, of any desired shape, the

approximately semi-circular contour shown being preferred, the object of which will hereinafter appear;

The blank shown in Fig. 7 is bent, sawtooth fashion, along the dotted lines 18, 19, so that the s aee 2 0 fford horizonta ly dis Each of these filler posed elements or cross bars 21, while the portions 22, are obliquely arranged so as to reach from the apexes of the corrugations 12 diagonally across the air space to the next lower, opposite apex of the crimps 12, the cross bars 21 connecting the apexes of opposed, crimps and thereby dividing each air space into a multiplicity of horizontally disposed ducts of approximately hexagonal contour which ducts are agam divided by the diagonal portions 22 into semi-hexagonal conduits 24, as clearly illustrated in Fig. 3 and others. v

In operation, air is forced through the conduits 24c, usually by a suction fan located in the rear of the radiator and driven by the motor installed in the vehicle, which air coming in contact with the metallic surfaces of the water tubes and thefillers-C, in the air spaces B, abstracts heat from the water passing through the water passages 16, and thus reduces the temperature thereof to a normal, proper workingtemperature.

In preparing a radiator core for insertion into'the usual radiator casing, the number of tube-units required to make up the core,

1 are placed side by side, and then the filler strips placed into the spaces between the water tubes. And in order that these filler strips may be properly located, 1 form at the angles of each strip grooves 25, which engage the apexes of the crimps 12 and hold the filler strip temporarily in position. \Vhen thus assembled, the core is placed into a clamping frame, similar to a printers chase, and then dipped, face down, into a ,fluxing solution, and from there into a bath of molten solder, which when cooled and hardened, unites the fillers to the tubes and at the same time hermetically closes the longitudinal marginal seams where the projections 12 contact with each other. This dipping operation is then repeated with the core, back down, which completes the core ready for insertion into the casing.

In dipping the core into the molten solder, usually to a depth of l of an inch, all the metallic surfaces will be coated with solder for that distance, part of which coating is necessary, but part is superfluous but cannot be avoided. Thus the oblique portions of the filler strip will be covered with solder. and to avoid this useless expenditure of solder, the margins of these oblique portions 22 of the filler strip are cut away by the notches 17, to a depth sufficient to pre-.

vent them from receivlng any solder, thus resulting in a saving of solder without affecting the etiiciency of the radiator. At

the same time, thisremoval of metal lightens the core, which is desirable, while the scrap metal resulting from the notching of the filler strip represents a certain value whiclrreduces the cost of the core.

In this connection I desire to state-that naeaeie while ll prefer to provide the filler strip with the notches or cut-outs 17, for the reasons stated, these notches may be omitted, if desired, without impairing the. efiiciency of the radiator.

\Vith the cross bars 21 of the filler strip in position, the core assumes the hexagonal,

cellular appearance; At the same time these of construction herein disclosed, may be varied, and parts omitted without departing from the scope of my invention as defined in the appended claims. I

'Having thus fullydescribed this invention, ll claim as new, and desire to secure to myself, by Letters Patent of the United States 1. A radiator core, including, in combination, a seriesof vertically disposed, spaced apart, water tubes, and a series of filler strips in the spaces between the water tubes, said water tubes being transversely crimped, said filler strips comprisingeach a ribbon of sheet metal, said ribbon having a saw-tooth formation adording horizontally disposed members alternating with obliquely arranged member's, the horizontally disposed members contacting with the apexes of opposedly located crimps of the water tubes, the obliquely arranged inembers extending diagonally through the space between adj acent water tubes, and from an apex thereof on one side to the next adjacent apex on the other side.

2. A radiator core, including, in combination, a series of vertically disposed, spaced apart, water tubes, and a" series oi filler strips in the spaces between the water tubes, said water tubes being'transversely crimped or undulated, said filler strips comprising each a strip of metal, said strip having a saw-tooth formation affording horizontally disposed members alternating with obliquely arranged members, the horizontally disposed members contacting'with the apexes of oppositely located external orimps of thewater jointure with the obliquely arranged members to engage the apexes of the crimps of the water tubes.

3. A radiator core, including, in combinatlon, a series of vertically disposed, spaced apart, water tubes, and a series of filler strips in the spaces between the water tubes, said water tubes being transversely crimped and adjacent tubes arranged with their oppositely disposed outwardly extending crimped edges in the same horizontal plane, said filler strips comprising each a ribbon of sheet metal, said ribbon having a sawtooth formation affording horizontally disposed parts alternating with obliquely arranged parts, the, horizontally disposed parts contacting with the apexes of opposedly located crimps of the water tubes, the obliquely arranged members reaching from the apexes of one water tube to the next lower apexes of the opposing water tube and out of contact with the surfaces of the water tubes. said filler strip having notches in its longitudinal margins.

4. A radiator core, including, in combination, a series of vertically disposed, spaced apart, water tubes, and a series of filler strips in the spaces between the water tubes, said water tubes being transversely undulated, each filler strip comprising a ribbon of sheet metal. said ribbon having a sawtooth formation, affording horizontally disposed parts alternating with obliquely arranged parts, the horizontally disposed parts contacting with the crests of the crimps of opposing water tubes, said obliquely arranged members cont-actlng with the crests of one of the water tubes, and then with the next adjacent crests on the oppositely located water tube, the whole being integrally united by dipping into molten solder.

5. In a radiator core, a-plurality of thin water tubes alternating with spacer strips, the water tubes being of zig-zag form, each two adjacent inwardly inclined facets of the water tubes forming two sides of a hexagonal space, the, similar facets of adjacent tubes forming 'part of the same hexagonal space, and the outer edges of said pairs of facets of adjacent tubes being spaced apart horizontally a distance substantially equal to the width of the facet, each spacer strip being bent to provide horizontal sections adapted to contact at their ends with opposed outer edges of said facets of the water 6. A radiator core having hexagonal air' spaces each divided into two parts by a strip of metal extending therethrough onv a long diameter, the openings being-defined. at top and bottom by horizontal sheet metal spacers, joining the ends of the diagonal dividing member and which each form one side of a hexagonal opening, and on the side defined by water tubes formed to spread outwardly from the ends of the spacers on angles to provide in each water tube two sides of the hexagonal opening between adjacent fillers.

7. In a radiator core, substantially parallel thin water tubes alternating with a sheet metal spacer, the spacer formed to present short horizontal spacer sections and long diagonally extending connecting sections, the bends at the joining endsof the sections being relatively sharp, the spacer contacting with the water tubes at the bends only, and the spacer strips notched at their lateral edges between the contacting bends thereof so that the radiator presents the appearance of hexagonal shaped air passages in the core.

8. In a radiator core, substantially parallel thin double-walled water tubes, alternating with sheet metalspacers, each spa'cer formed in saw-toothed corrugated form and of single thickness to present short, horizontal spacer sections and diagonally extending, connecting and bracing sections, the bends and junctions of the alternate sections being relatively sharp, spacers contacting with the water tubes at the bends of the spacers only, the water tubes bent into zig-zag form to provide in connection with the horizontal sections of the spacers hexagonal-shaped air passages in the core, the

-contacting edges of the spacers contacting with the apexes only of the water sections,

whereby there is provided a radiator core having substantially single thickness walls only throughout the extent of the water sections and spacer sections. a

In testimony that I claim the foregoing a my invention, I have hereunto set my hand.

HARRY JAFFE'. 

